NOUN PRACTICE

http://www.eflnet.com/grammar/possessives.php
http://www.funbrain.com/cgi-bin/plur.cgi?A1=s&A2=3
http://www.eduplace.com/cgi-bin/hme-quiz-directions.cgi?Grade=3&Unit=2&Topic=Nouns
http://www.eflnet.com/grammar/possessives.php
http://www.english-zone.com/spelling/poss2.html
http://www.portcities.org.uk/london/riversideroses/games/game101.htm
http://www.chompchomp.com/hotpotatoes/apostrophes01.htm
http://www.chompchomp.com/hotpotatoes/apostrophes02.htm
http://www.chompchomp.com/hotpotatoes/apostrophes03.htm
http://www.chompchomp.com/hotpotatoes/apostrophes04.htm
http://www.chompchomp.com/hotpotatoes/apostrophes05.htm
http://www.quia.com/ba/88946.html
(You can go to quia's home page and search for possessive exercises for more fun!)